[PATCH v3] arm64: dts: renesas: r8a779g3: Add Argon40 fan HAT DTO to Retronix R-Car V4H Sparrow Hawk

[Wolfram Sang]

On Sun, Sep 07, 2025 at 06:10:53PM +0200, Marek Vasut wrote:
> Add DT overlay to bind Argon40 fan HAT, on Retronix R-Car V4H
> Sparrow Hawk board. Fan RPM control and full RPM on reboot has
> been tested.
> 
> Tested-by: Wolfram Sang <wsa+renesas at sang-engineering.com>
> Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>

Reviewed-by: Wolfram Sang <wsa+renesas at sang-engineering.com>

> + * # Localize hwmon sysfs directory that matches the PWM fan,
> + * # enable the PWM fan, and configure the fan speed manually.
> + * r8a779g3-sparrow-hawk$ ls -1 /sys/devices/platform/pwm-fan-ext/hwmon/hwmon?/pwm?_enable
> + * /sys/devices/platform/pwm-fan-ext/hwmon/hwmon0/pwm1_enable

Great solution!